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Linux/drivers/ata/pata_netcell.c

  1 /*
  2  *    pata_netcell.c - Netcell PATA driver
  3  *
  4  *      (c) 2006 Red Hat
  5  */
  6 
  7 #include <linux/kernel.h>
  8 #include <linux/module.h>
  9 #include <linux/pci.h>
 10 #include <linux/init.h>
 11 #include <linux/blkdev.h>
 12 #include <linux/delay.h>
 13 #include <linux/device.h>
 14 #include <scsi/scsi_host.h>
 15 #include <linux/libata.h>
 16 #include <linux/ata.h>
 17 
 18 #define DRV_NAME        "pata_netcell"
 19 #define DRV_VERSION     "0.1.7"
 20 
 21 /* No PIO or DMA methods needed for this device */
 22 
 23 static unsigned int netcell_read_id(struct ata_device *adev,
 24                                         struct ata_taskfile *tf, u16 *id)
 25 {
 26         unsigned int err_mask = ata_do_dev_read_id(adev, tf, id);
 27         /* Firmware forgets to mark words 85-87 valid */
 28         if (err_mask == 0)
 29                 id[ATA_ID_CSF_DEFAULT] |= 0x4000;
 30         return err_mask;
 31 }
 32 
 33 static struct scsi_host_template netcell_sht = {
 34         ATA_BMDMA_SHT(DRV_NAME),
 35 };
 36 
 37 static struct ata_port_operations netcell_ops = {
 38         .inherits       = &ata_bmdma_port_ops,
 39         .cable_detect   = ata_cable_80wire,
 40         .read_id        = netcell_read_id,
 41 };
 42 
 43 
 44 /**
 45  *      netcell_init_one - Register Netcell ATA PCI device with kernel services
 46  *      @pdev: PCI device to register
 47  *      @ent: Entry in netcell_pci_tbl matching with @pdev
 48  *
 49  *      Called from kernel PCI layer.
 50  *
 51  *      LOCKING:
 52  *      Inherited from PCI layer (may sleep).
 53  *
 54  *      RETURNS:
 55  *      Zero on success, or -ERRNO value.
 56  */
 57 
 58 static int netcell_init_one (struct pci_dev *pdev, const struct pci_device_id *ent)
 59 {
 60         static const struct ata_port_info info = {
 61                 .flags          = ATA_FLAG_SLAVE_POSS,
 62                 /* Actually we don't really care about these as the
 63                    firmware deals with it */
 64                 .pio_mask       = ATA_PIO4,
 65                 .mwdma_mask     = ATA_MWDMA2,
 66                 .udma_mask      = ATA_UDMA5, /* UDMA 133 */
 67                 .port_ops       = &netcell_ops,
 68         };
 69         const struct ata_port_info *port_info[] = { &info, NULL };
 70         int rc;
 71 
 72         ata_print_version_once(&pdev->dev, DRV_VERSION);
 73 
 74         rc = pcim_enable_device(pdev);
 75         if (rc)
 76                 return rc;
 77 
 78         /* Any chip specific setup/optimisation/messages here */
 79         ata_pci_bmdma_clear_simplex(pdev);
 80 
 81         /* And let the library code do the work */
 82         return ata_pci_bmdma_init_one(pdev, port_info, &netcell_sht, NULL, 0);
 83 }
 84 
 85 static const struct pci_device_id netcell_pci_tbl[] = {
 86         { PCI_VDEVICE(NETCELL, PCI_DEVICE_ID_REVOLUTION), },
 87 
 88         { }     /* terminate list */
 89 };
 90 
 91 static struct pci_driver netcell_pci_driver = {
 92         .name                   = DRV_NAME,
 93         .id_table               = netcell_pci_tbl,
 94         .probe                  = netcell_init_one,
 95         .remove                 = ata_pci_remove_one,
 96 #ifdef CONFIG_PM
 97         .suspend                = ata_pci_device_suspend,
 98         .resume                 = ata_pci_device_resume,
 99 #endif
100 };
101 
102 module_pci_driver(netcell_pci_driver);
103 
104 MODULE_AUTHOR("Alan Cox");
105 MODULE_DESCRIPTION("SCSI low-level driver for Netcell PATA RAID");
106 MODULE_LICENSE("GPL");
107 MODULE_DEVICE_TABLE(pci, netcell_pci_tbl);
108 MODULE_VERSION(DRV_VERSION);
109 

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